Or, perhaps: how do I develop a cultivar at all?
First off, my knowledge and experience on the subject is close to nil. I've got a decent enough knowledge of gardening concepts, but have done precious little plant breeding, and nearly everything I know about genetics comes from the reptile hobby and the breeding of various morphs (also haven't done any of that).
But I wanted to try my hand at plant breeding - at least, get started somewhere.
I've decided to go for something simple - a dandelion. Hardy, easy to grow, flowers quick and I know will definitely reproduce for me. Contamination from external sources might be an issue but there's several easy fixes for that. I could probably wait around and inbreed them until some funny traits pop up but for now I want to try some obvious changes - wider leaves, bigger flower, maybe both.
All I (think I) know is that I'll have to keep track of my individuals and their ancestry and select for traits based on their current expression and genetic pedigree. On the surface that sounds pretty simple but I don't know the details of the execution. Is there a specific way plant breeders do it? Software that would make the management easier?
I tried looking this up, but Google isn't very extensive on this subject. Any advice or resources that can get me started would be greatly appreciated.